policy_module(lpd, 1.12.0)

########################################

#

# Declarations

#

## <desc>

##	

##	Use lpd server instead of cups

##	

## </desc>

gen_tunable(use_lpd_server, false)

type checkpc_t;

type checkpc_exec_t;

init_system_domain(checkpc_t, checkpc_exec_t)

role system_r types checkpc_t;

type checkpc_log_t;

logging_log_file(checkpc_log_t)

type lpd_t;

type lpd_exec_t;

init_daemon_domain(lpd_t, lpd_exec_t)

type lpd_tmp_t;

files_tmp_file(lpd_tmp_t)

type lpd_var_run_t;

files_pid_file(lpd_var_run_t)

type lpr_t;

type lpr_exec_t;

typealias lpr_t alias { user_lpr_t staff_lpr_t sysadm_lpr_t };

typealias lpr_t alias { auditadm_lpr_t secadm_lpr_t };

application_domain(lpr_t, lpr_exec_t)

ubac_constrained(lpr_t)

type lpr_tmp_t;

typealias lpr_tmp_t alias { user_lpr_tmp_t staff_lpr_tmp_t sysadm_lpr_tmp_t };

typealias lpr_tmp_t alias { auditadm_lpr_tmp_t secadm_lpr_tmp_t };

files_tmp_file(lpr_tmp_t)

ubac_constrained(lpr_tmp_t)

# Type for spool files.

type print_spool_t;

typealias print_spool_t alias { user_print_spool_t staff_print_spool_t sysadm_print_spool_t };

typealias print_spool_t alias { auditadm_print_spool_t secadm_print_spool_t };

files_type(print_spool_t)

ubac_constrained(print_spool_t)

type printer_t;

files_type(printer_t)

type printconf_t;

files_type(printconf_t)

########################################

#

# Checkpc local policy

#

# Allow checkpc to access the lpd spool so it can check & fix it.

# This requires that /usr/sbin/checkpc have type checkpc_t.

allow checkpc_t self:capability { setgid setuid dac_override };

allow checkpc_t self:process signal_perms;

allow checkpc_t self:unix_stream_socket create_socket_perms;

allow checkpc_t self:tcp_socket create_socket_perms;

allow checkpc_t self:udp_socket create_socket_perms;

allow checkpc_t checkpc_log_t:file manage_file_perms;

logging_log_filetrans(checkpc_t, checkpc_log_t, file)

allow checkpc_t lpd_var_run_t:dir search_dir_perms;

files_search_pids(checkpc_t)

rw_files_pattern(checkpc_t, print_spool_t, print_spool_t)

delete_files_pattern(checkpc_t, print_spool_t, print_spool_t)

files_search_spool(checkpc_t)

allow checkpc_t printconf_t:file getattr_file_perms;

allow checkpc_t printconf_t:dir list_dir_perms;

kernel_read_system_state(checkpc_t)

corenet_all_recvfrom_unlabeled(checkpc_t)

corenet_all_recvfrom_netlabel(checkpc_t)

corenet_tcp_sendrecv_generic_if(checkpc_t)

corenet_udp_sendrecv_generic_if(checkpc_t)

corenet_tcp_sendrecv_generic_node(checkpc_t)

corenet_udp_sendrecv_generic_node(checkpc_t)

corenet_tcp_sendrecv_all_ports(checkpc_t)

corenet_udp_sendrecv_all_ports(checkpc_t)

corenet_tcp_connect_all_ports(checkpc_t)

corenet_sendrecv_all_client_packets(checkpc_t)

dev_append_printer(checkpc_t)

# This is less desirable, but checkpc demands /bin/bash and /bin/chown:

corecmd_exec_shell(checkpc_t)

corecmd_exec_bin(checkpc_t)

domain_use_interactive_fds(checkpc_t)

files_read_etc_files(checkpc_t)

files_read_etc_runtime_files(checkpc_t)

init_use_script_ptys(checkpc_t)

# Allow access to /dev/console through the fd:

init_use_fds(checkpc_t)

sysnet_read_config(checkpc_t)

userdom_use_user_terminals(checkpc_t)

optional_policy(`

	cron_system_entry(checkpc_t, checkpc_exec_t)

')

optional_policy(`

	logging_send_syslog_msg(checkpc_t)

')

optional_policy(`

	nis_use_ypbind(checkpc_t)

')

########################################

#

# Lpd local policy

#

allow lpd_t self:capability { setgid setuid net_bind_service dac_read_search dac_override chown fowner };

dontaudit lpd_t self:capability sys_tty_config;

allow lpd_t self:process signal_perms;

allow lpd_t self:fifo_file rw_fifo_file_perms;

allow lpd_t self:unix_stream_socket create_stream_socket_perms;

allow lpd_t self:unix_dgram_socket create_socket_perms;

allow lpd_t self:tcp_socket create_stream_socket_perms;

allow lpd_t self:udp_socket create_stream_socket_perms;

manage_dirs_pattern(lpd_t, lpd_tmp_t, lpd_tmp_t)

manage_files_pattern(lpd_t, lpd_tmp_t, lpd_tmp_t)

files_tmp_filetrans(lpd_t, lpd_tmp_t, { file dir })

manage_dirs_pattern(lpd_t, lpd_var_run_t, lpd_var_run_t)

manage_files_pattern(lpd_t, lpd_var_run_t, lpd_var_run_t)

manage_sock_files_pattern(lpd_t, lpd_var_run_t, lpd_var_run_t)

files_pid_filetrans(lpd_t, lpd_var_run_t, { dir file })

# Write to /var/spool/lpd.

manage_files_pattern(lpd_t, print_spool_t, print_spool_t)

files_search_spool(lpd_t)

# lpd must be able to execute the filter utilities in /usr/share/printconf.

allow lpd_t printconf_t:dir list_dir_perms;

can_exec(lpd_t, printconf_t)

# Create and bind to /dev/printer.

allow lpd_t printer_t:lnk_file manage_lnk_file_perms;

dev_filetrans(lpd_t, printer_t, lnk_file)

kernel_read_kernel_sysctls(lpd_t)

# bash wants access to /proc/meminfo

kernel_read_system_state(lpd_t)

corenet_all_recvfrom_unlabeled(lpd_t)

corenet_all_recvfrom_netlabel(lpd_t)

corenet_tcp_sendrecv_generic_if(lpd_t)

corenet_udp_sendrecv_generic_if(lpd_t)

corenet_tcp_sendrecv_generic_node(lpd_t)

corenet_udp_sendrecv_generic_node(lpd_t)

corenet_tcp_sendrecv_all_ports(lpd_t)

corenet_udp_sendrecv_all_ports(lpd_t)

corenet_tcp_bind_generic_node(lpd_t)

corenet_tcp_bind_printer_port(lpd_t)

corenet_sendrecv_printer_server_packets(lpd_t)

dev_read_sysfs(lpd_t)

dev_rw_printer(lpd_t)

fs_getattr_all_fs(lpd_t)

fs_search_auto_mountpoints(lpd_t)

# Filter scripts may be shell scripts, and may invoke progs like /bin/mktemp

corecmd_exec_bin(lpd_t)

corecmd_exec_shell(lpd_t)

domain_use_interactive_fds(lpd_t)

files_read_etc_runtime_files(lpd_t)

files_read_usr_files(lpd_t)

# for defoma

files_list_world_readable(lpd_t)

files_read_world_readable_files(lpd_t)

files_read_world_readable_symlinks(lpd_t)

files_list_var_lib(lpd_t)

files_read_var_lib_files(lpd_t)

files_read_var_lib_symlinks(lpd_t)

# config files for lpd are of type etc_t, probably should change this

files_read_etc_files(lpd_t)

logging_send_syslog_msg(lpd_t)

miscfiles_read_fonts(lpd_t)

miscfiles_read_localization(lpd_t)

sysnet_read_config(lpd_t)

userdom_dontaudit_use_unpriv_user_fds(lpd_t)

userdom_dontaudit_search_user_home_dirs(lpd_t)

optional_policy(`

	nis_use_ypbind(lpd_t)

')

optional_policy(`

	seutil_sigchld_newrole(lpd_t)

')

optional_policy(`

	udev_read_db(lpd_t)

')

##############################

#

# Local policy

#

allow lpr_t self:capability { setuid dac_override net_bind_service chown };

allow lpr_t self:unix_stream_socket create_stream_socket_perms;

allow lpr_t self:tcp_socket create_socket_perms;

allow lpr_t self:udp_socket create_socket_perms;

can_exec(lpr_t, lpr_exec_t)

# Allow lpd to read, rename, and unlink spool files.

allow lpd_t print_spool_t:file { read_file_perms rename_file_perms delete_file_perms };

kernel_read_kernel_sysctls(lpr_t)

corenet_all_recvfrom_unlabeled(lpr_t)

corenet_all_recvfrom_netlabel(lpr_t)

corenet_tcp_sendrecv_generic_if(lpr_t)

corenet_udp_sendrecv_generic_if(lpr_t)

corenet_tcp_sendrecv_generic_node(lpr_t)

corenet_udp_sendrecv_generic_node(lpr_t)

corenet_tcp_sendrecv_all_ports(lpr_t)

corenet_udp_sendrecv_all_ports(lpr_t)

corenet_tcp_connect_all_ports(lpr_t)

corenet_sendrecv_all_client_packets(lpr_t)

dev_read_rand(lpr_t)

dev_read_urand(lpr_t)

domain_use_interactive_fds(lpr_t)

files_search_spool(lpr_t)

# for lpd config files (should have a new type)

files_read_etc_files(lpr_t)

# for test print

files_read_usr_files(lpr_t)

#Added to cover read_content macro

files_list_home(lpr_t)

files_read_generic_tmp_files(lpr_t)

fs_getattr_xattr_fs(lpr_t)

# Access the terminal.

term_use_controlling_term(lpr_t)

term_use_generic_ptys(lpr_t)

auth_use_nsswitch(lpr_t)

miscfiles_read_localization(lpr_t)

userdom_read_user_tmp_symlinks(lpr_t)

# Write to the user domain tty.

userdom_use_user_terminals(lpr_t)

userdom_read_user_home_content_files(lpr_t)

userdom_read_user_tmp_files(lpr_t)

tunable_policy(`use_lpd_server',`

	# lpr can run in lightweight mode, without a local print spooler.

	allow lpr_t lpd_var_run_t:dir search_dir_perms;

	allow lpr_t lpd_var_run_t:sock_file write_sock_file_perms;

	files_read_var_files(lpr_t)

	# Connect to lpd via a Unix domain socket.

	allow lpr_t printer_t:sock_file read_sock_file_perms;

	stream_connect_pattern(lpr_t, printer_t, printer_t, lpd_t)

	# Send SIGHUP to lpd.

	allow lpr_t lpd_t:process signal;

	manage_dirs_pattern(lpr_t, lpr_tmp_t, lpr_tmp_t)

	manage_files_pattern(lpr_t, lpr_tmp_t, lpr_tmp_t)

	files_tmp_filetrans(lpr_t, lpr_tmp_t, { file dir })

	manage_files_pattern(lpr_t, print_spool_t, print_spool_t)

	filetrans_pattern(lpr_t, print_spool_t, print_spool_t, file)

	# Read and write shared files in the spool directory.

	allow lpr_t print_spool_t:file rw_file_perms;

	allow lpr_t printconf_t:dir list_dir_perms;

	read_files_pattern(lpr_t, printconf_t, printconf_t)

	read_lnk_files_pattern(lpr_t, printconf_t, printconf_t)

')

tunable_policy(`use_nfs_home_dirs',`

	files_list_home(lpr_t)

	fs_list_auto_mountpoints(lpr_t)

	fs_read_nfs_files(lpr_t)

	fs_read_nfs_symlinks(lpr_t)

')

tunable_policy(`use_samba_home_dirs',`

	files_list_home(lpr_t)

	fs_list_auto_mountpoints(lpr_t)

	fs_read_cifs_files(lpr_t)

	fs_read_cifs_symlinks(lpr_t)

')

optional_policy(`

	cups_read_config(lpr_t)

	cups_stream_connect(lpr_t)

	cups_read_pid_files(lpr_t)

')

optional_policy(`

	logging_send_syslog_msg(lpr_t)

')